Settings → Notification Settings

Which email notifications you receive.

GET /user/v1/settings/notifications

{
  "notifyDocumentShared": true,
  "notifyDocumentSigned": true,
  "notifyWorkflowCompleted": true,
  "notifyDocumentDeclined": true,
  "notifyAllSigner": false
}

PUT /user/v1/settings/notifications

Accepts the same shape — all fields boolean, all optional (unspecified fields keep their current value).